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Boost to h→Zγ: from LHC to future e+e− colliders

No, Jose Miguel; Spannowsky, Michael

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Jose Miguel No


A precise measurement of the Higgs h→Zγ decay is very challenging at the LHC, due to the very low %SM h→Zγ(Z→ℓℓ) branching fraction and the shortage of kinematic handles to suppress the large SM Zγ background. We show how such a measurement would be significantly improved by considering Higgs production in association with a hard jet. We compare the prospective HL-LHC sensitivity in this channel with other Higgs production modes where h is fairly boosted, e.g.~weak boson fusion, and also to the potential h→Zγ measurement achievable with a future e+e− circular collider ({\sl fcc-ee}). Finally, we discuss new physics implications of a precision measurement of h→Zγ.


No, J. M., & Spannowsky, M. (2017). Boost to h→Zγ: from LHC to future e+e− colliders. Physical Review D, 95(1), Article 075027.

Journal Article Type Article
Online Publication Date Apr 21, 2017
Publication Date Apr 21, 2017
Deposit Date Jan 5, 2017
Publicly Available Date May 26, 2017
Journal Physical Review D
Print ISSN 2470-0010
Electronic ISSN 2470-0029
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 95
Issue 1
Article Number 075027
Related Public URLs


Published Journal Article (387 Kb)

Copyright Statement
Reprinted with permission from the American Physical Society: Physical Review D 95, 075027 © (2017) by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.

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